Sole-holder



J. W. COSGROVE.

SOLE HOLDER.

APPLICATION FILED "18.24. Ian.

Patented Sept. 28, 1920.

u mr zp STATES PATENT OFFICE.

JOHN w. cosonbvn, or MEDFOED, nassncnnsnrrs, assreno'n, BY mnsnnAssisi:-

nnurs, T0 UNITED snon MACHINERY CORPORATION, or PArEnson', NEW JERSEY,

A coaroaA'rxoiv'or new JERSEY.

SOLE-HOLDER.

Specification of Letters Patent. Patented Sept. 28, 1920.

Application filed February 24. 1917. Serial No. 150,833.

To ail whom it may concern:

Be it known that I, J OHN W. Coscnovn, a citizen of the United Statesresiding at Mediord, in the county of hliddlesex and State ofMassachusetts, have invented certain Improvements in Sole-Holders, ofwhich the following description, in connection with the accompanyingdrawings, is a specification, like reference characters on the drawingsindicating like parts in the several figures.

This invention relates to holders for a pile of blanks and is hereinillustrated in connection with sole holders for use in the manufactureof boots and shoes.

In the manufacture of certain kinds of boots and shoes it is customaryto cement a tap to a sole preparatory to sewing the two together.Commonly a pile of soles with the taps freshly cemented thereto issubjected to pressure for a time sufficient for the cement to dry orset. It is desirable to provide for this operation a press and aplurality of small holders each of which may be filled, placed in thepress and,aiter having been subjected to pressure, removed therefrom andallowed to stand until the cement has set. The pressure imparted by thepress should, of course, be maintained by the holder.

It is an object of my invention, accordingly, to provide such holderswith a simple and Inexpensive but atthe same time thoroughly reliableautomatically operating locking means by which the parts of the holderswill be prevented from separating when the pressure exerted by the pressis relieved, and which will maintain the holders in position to exertupon the soles therein the same degree of pressure as was originallyimparted thereto by the action of the press.

One feature of the present invention comprises aholder for a pileof'blanks adapted to be placed in and removed from a press, said holdercomprising a U-shaped frame,a clamping member slidable on the arms ofthe U, and locking mechanism carried by said member constructed andarranged to ermit the member to be lowered freely ut to bite the arms ofthe Uinstantly on both sides of said arms when force is ap plied tendingto raise said member, In the illustrative embodiment of the inventionthis locking mechanism consists of floating levers loosely fulcrumed onthe clamping member and having sharp cornered slots to receive the armsof the U, the arms being gripped by diagonally opposite corners of theslots to prevent upward movement of the member. The clamping member isthus locked firmly andcinstantly against upward movement until the outerends of the levers are swung upwardly to aline the slots in the leverswith the upright arms of the U- shapcd frame, after which the member maybe freely raised.

7 It is desirable that when the clamping member is raised and the loversreleased, the member shall remain in raised position while the holder isbeing first emptied and then filled. Another feature of the inventionconsists of a holder for a pile of blanks comprising a U-shaped frame, aclamping member slidable on the arms of the U, looking mechanismcomprising levers having slots to receive said arms, and yielding meansfor maintaining said levers in looking position whereby said clampingmember will he held suspended on said arms in any position to which itmay be moved.

These and other features of the invention, including certain details ofconstruction and combinations of parts, will be described in connectionwith an illustrative machine and pointed out in the appended claims.

Referring 'now to the accompanying drawings, 7

Figure 1 ice perspective of a machine in which the present invention isembodied;

Fig. 2 is a detail, principally in elevation, of a portion of themachine;

Fig. 3 shows in plan and elevation one of the locking levers, part ofthe lever being broken away in the elevation to show the slot incross-section, and

Fig. 4 is a perspective of a tool which may be used to release thelocking members.

The machine comprises a press and a unit or holder which'may be placedin and removed from the press. The press has a base 5 which supports atable 7 and an overhanging arm 9. In the end of the arm is a straightsided groove the open end of which.is closed by a plate 11 to form ahole square in cross-section to receive a plunger- 13 having a rackformed on one side thereof. A shaft 15 having a hand wheel 17 at one endand a ratchet 19 near the other end can lies a pinion 21 which engagesthe rack to raise and lower the plunger 13. A lever 23 having a handle25 has pivoted to it a pawl 27 which is urged at all time: hy a spring29 toward a position in which the pawl gages the ratchet. lam. however,the lever 23 is moved to its rearward position, as shown in Fig. 2, thetail of the pawl rides under a stationary pin 31 whereby the pawl istilted as shown into a position in which it is out of engagement withthe ratchet ii). The lever 23 is curved as shown in Fig. l. and its hubis loosely mounted on the end of the shaft 15. The table 7 oi the presshas formed in it a groove 33 to receive the base of a U-shaped unit orholder; and the upright portion of the frame of the press has aprojection 35 tormei'l with a similar groove to receive one oi theupright arms of the holder so that the holder will stand firmly in anupright position when placed in the press.

In the operation of the press the lever :23 is swung hack into theposition shown in Figs. 1 and 2 and the hand wheel l7 turned to raisethe plunger 13 su'liiciently to permit the holder with its pile ofblanks to he placed upon the table I. The hand wheel 17 is then turnedin the opposite dire tion to bring the plunger down lirml y upon theblock or clamp. which slides on the arms ol the holder, and then thelever 23 is swung" forward to apply pressure to the blanks. The lever isthen swung bacl; again. the plunger raised, the holder with the fullypressed blanks removed. and a new holder tilled with uncompressed blanksplaced in the press. \Vhen the plunger l3 is raised it is desirable thatit shall rem-am lIl raised position while the holder filled with blanksis being removed and a new one substituted. To this end a springpreseedfrict on plug 37 carried by the plate ll presses at a l times againstone side of the plunger with suilicient force to hold the plunger in anyposition to which it may he moved.

The holder comprises a U-shaped frame 39 upon the arms of which aclamping block ll is slidable. said block being provided with slotswhich tit the arms just closely enough to permit free sliding but toprevent any considerable play. Fulcrumed near the ends of the block aretwo locking levers 43, each member. in the illustrative construction,extending into suitable socket in the block and having at its inner enda. yoke which straddles the bottom Wall of the socket. These floatinglocking members are provided with slots through which the arms 39 pass:and diagonally opposite corners. the upper ones on the inner sides pfthe arms 39 and the lower ones on the outer sides of said arms, arecutaway or beveled to form ridges, apices or corners 47, 49.

'When, therefore. the locking levers are swung downwardly into theposition shown best in Fig. 2, these corne s are in contact with thearms 39 and any attempt to move the block ll upwardly will cause therecorners to bite the arms with a force propertional to that exertedupwardly against the block -11. If it is desired to raise said block4.1, the outer ends of the locking levers must first be raised. In orderto cause the locking levers to engage the arms with sullicient force tomaintain the block in any position to which it may be raised, springpressed pins 51 engage the upper sides of the looking levers. Thesprings are eufliciently strong for the purpose described but mayreadily be compressed by pulling up on the outer ends of the members 43.

In the operation of the machine two columns of soles with taps cementedthereto are arranged, as shown in Fig. l, with boards 55 at the top andbottom as well as intermediate the top and bottom of the columns. Theclamping block ll is then pushed down against the top hoard 55, and theunit or holder placed in the press. The wheel 1? is then turned to bringthe lower end of the plunger 13 down upon the block 135. The handle 25is then manipulated to force the block 41 downwardly along the arms ofthe holder 39. li hen sullicient ressure has been applied to the soles,the handle 25 is thrown back into the position shown. the wheel 17manipulated to raise the plunger 13 and the unit or holder removed andreplaced b another. It should be particularly IlOlZEA that the lockinglevers -13 .permit downward movement of the block 41 but hold itimmovably against upward movement in any position to which it may bemoved by the plunger. In this way the pressure applied to the soles bythe press is automatically maintained unchanged when the holder isremoved from the press. The holder with the soles under pressure is putaside for a time suflicicnt to permit the cement to set, after which thelocking levers are loosened and the soles remover. The resiliency of thecompressed soles causes the locking levers to engage the sides of thearms of the holder with considerable force, so that it is not easy tolift up their outer ends and thereby release them. To facilitate this 0oration means is provided for lifting t e outer ends of these lockinglevers, said means being herein illustrated as a tool 57 the two arms 59of which may he placed beneath the outer ends of the locking memhers43,as illustrated in dotted lines in Fig. 1, preparatory to pressing downupon the handle of the tool.

Although the invention has been set forth in connection with anillustrative machine, it should be understood that the invention is notlimited in the scope of its application to the particular machine whichhas been shown and described.

Having thus described my invention, I claim as new and desire to secureby Letters Patent of the United States:

1. A holder for a pile of blanks adaptedto be placed in and removed froma press, said holder comprising a U-shaped frame, a clamping memberslidable on the arms of the frame and provided with sockets, and lockinglevers having slots to receive the arms of the frame, the inner ends ofthe levers being received in the sockets.

A holder for a pile of blanks adapted to be placed in and removed from apress, said holder comprising a U-shaped frame a clamping memberslidable on the arms of the frame and provided with sockets in the endsthereof, and locking levers having slots to receive the arms of theframe and yokes which extend into and straddle the bottom walls of thesockets.

3. A holder for a pile of blanks, having, in rombination, a U-shapedframe, a clamp' ing member slidable on tl e arms of the U and providedwith sockets and levers loosely fulerumed at one end in said sockets andprovided with means to receive and grip the arms of the U.

A holder for a pile of blanks, having, in combination, a U-shaped frame,a clamping member slidable on the arms of the U, levers looselyfulcrumed at one end on said member and having slots to receive the armsof the U, and yielding means acting to swing said levers into lockingposition.

5. A holder for a pile of blanks adapted to be placed in and removedfrom a press, said holder comprising a U-shaped frame, a clamping memberslidable on the arms of the frame, levers fulcrnmed at one end on saidmember and having slots to receive the arms of the frame, and yieldingmeans mounted on the lamping member and adapted to bear upon the levers.

(S. A holder for a pile of blanks, having, in rombination, a U+hapedframe, a clamping member having sockets in the ends thereof, leversfulcrnmed in said sockets and having slots to receive said arms,diagonally opposite corners of said slots being cut away to form sharpapices which bite said arms on both sides when said levers are in clinedin one direction, and yielding means for urging said levers to assumeinclined iorking positions.

7. A holder for a pile of blanks having, in. combination, a U-shapedframe, a clamping blork slidable on the arms oi the frame. lockinglevers having slots to receive said arms and being fulcrumed on saidblock. said slots having sharp apices on opposite walls thereof, andyielding means for maintaining said locking levers in inclined po--sition whereby said block will be held suspended on said arms in anyposition in which it may be placed until said locking levers arestraightened.

In testimony whereof I have signed my name to this specification.

JOHN W. COSGROVE.

